let a = 10
let b = 20
console.log(a+b)
document.getElementById("hello")

let add = (x:number,y:number)=>{
    let res = x * y
    return res
}  //x,y没有配置类型会报错
let res = add(2,3)
console.log(res)
export{}

// <-------------分割符号--------------->
let fs = require("fs")
// import fs from "fs"
console.log(fs)
console.log(fs.readFile("../wb.txt"))